Lasting-jack.



No. 764,527. PATENTED JULY 5, 1904.

H. s. GRIFFIN.

LASTING JACK.

APPLICATION FILED NOV. 21, 1903.

no MODEL.

UNITED STATES Patented July 5, 1904.

PATENT OEEIcE.

LASTlNG-JACK.

SPECIFICATION forming part of Letters Patent No. 764,527, dated July 5,1904.

Application filed November 21, 1903. Serial No. 182,105. (No model.)

To (ML whom it may concern.-

Be it known that I, HENRY S. GRIFFIN, of

Rochester, in the county of Monroe and State of New York, haveinvented anew and useful Improvement in Lasting-Jacks, which im provement is fullyset forth in the following specification and shown in the accompanyingdrawings. My invention is an improved lasting-jack, the same beinghereinafter fully described, and more particularly pointed out in theappended claim.

One of the objects of my invention is to produce a lasting-jack that canbe readily and conveniently swung or turned both in a horizontal and avertical plane to any desired position for use and made fast in saidposition.

Another object of the invention is to pro vide advantageous means forholding the frame and the upper parts of the jack.

A further object of the invention is to so construct the device that theblows of the hammer upon the sole of the shoe will fall more nearly overthe supporting-post for the jack, the latter thus constituting a moresolid body to receive the blows and rendering them more effective andsatisfactory.

Other objects and advantages of the invention will be brought out andmade to appear in the following specification, reference being had tothe accompanying drawings, forming a part thereof.

Figure 1 is a side elevation of my improved lasting-jack with partsshown in two positions by full and dotted lines. Fig. 2 is an edge viewof the jack and associated parts seen as indicated by arrow 2 in Fig. 1.Fig. 3 is a front elevation of the metal plate constituting a rest orholder for the superstructure and the upper part of the supporting-post.Fig. 4 is arear face view of the tilting head holding the upper parts.Fig. 5 is a vertical diametrical section of the tilting head and someassociated parts on the dotted line 5 5 .in Fig. 1, parts being brokenaway. Figs. 6

and 7 are respectively an edge view and a top view of the tilting headdetached. Fig. 8 is a plan of the device seen as indicated by arrow inFig. 2, parts being shown in two positions by full and dotted lines.Figs. 1, 2,

and 8 are drawn to a scale one-third size and the remaining figures to ascale one-half size.

As shown in the drawings, A is a circular tilting head, of iron, carriedby a supportingpost B, reaching upward from the lioor. This tilting headrests upon and against a metal plate (1, secured by ordinary means tothe post, said head having a cylindrical hub or part at extendinghorizontally through a central circular opening 6 in the plate and asimilar coaxial opening 0 in the post. The tilting head is formed at itsedges with a pair of diametrically opposite studs (Z (Z, projectingbackward into circular peripheral openings or recesses c c in the plateC concentric with the central opening I). The hub a of thehead A ishollow, and a clamping-boltf is passed through the hub and the opening 0in the post, being sup-plied with a washer g and a thumb-nut I). at therear side of the post to bind the parts together, the head of the boltoccupying a conical cavity 1. in the head A. By means of thisconstruction and arrangement of the parts it will be understood that byloosening the thumb-nut it the head A may be tilted or turned in avertical plane around the axis of the boltf and secured in any of itspositions by tightening the said nut, during which motions the studs (Z(Z traverse the recesses a c in the plate O. Normally the head occupiessuch position that the studs (Z d are in a horizontal line, as appearsin Figs. 3 and 4; but the head may be turned through a one-fourthrevolution toward the right, (the recesses c 0 being of suflicientlength to admit of this,) bringing the studs to the positions indicatedby dotted circles at the opposite ends of the respective recesses c cand in a vertical line.

The tilting head A is. formed on its front face with two diametricallyopposite horizontally-projecting lugs 7c In, formed with circularcoaxial openings 6 l, Figs. 5 and 7, in which to receive the cylindricalstem or part m of a frame 1). This frame supports at the ends of itsbranches or 0 standards E F, constituting, respectively, the heel-pieceand the toe-piece of the jack for supporting the corresponding parts ofthe last and of the shoe while being lasted. The part m is hollow andprovided with a spiral spring 3), Fig. 5, and an eyebolt 1*, attached tothe lower end of the spring. The lower end of the stem m is practicallyeven with the nether face of the lower lug it, the bolt 0" extendingbelow said lug and being provided with a washer s and a tighteningthumb-nut t, as shown. 'The upper end of the spring is connected with anextended part it of the heel-piece E by means of a crosspin Q}.

By means of the construction and operation of the parts of the inventionas described it will be understood that the frame D, with its standardsE and F, may be tilted in a vertical plane through an arc of ninetydegrees, a tilted position of the frame being shown by dotted lines inFig. 1, and that the frame and the standards may be turned horizontallythrough a complete revolution, as indicated by dotted lines in Fig. 8.The axes of these two motions of the parts intersect at right angles,and the frame, with its standards, may be temporarily secured in any ofits said varied positions for the convenience of the work man by meansof the thumb-nuts h and t, as described.

The lasting-jack is commonly placed near to or at the side of aWork-bench, being held to place against the bench by some simple means,as a bracket K, Figs. 2, 5, and 8, secured to the bench.

What I claim as my invention, and desire to secure by Letters Patent, is

A lasting-jack comprising a support, a tilting head having diametricallyopposite horizontal projecting lugs with coaxial openings. and a hub atright angles thereto, having a cavity, a clamping-bolt having its headseated in said cavity, a frame having a hollow stem received in theopenings of said lugs and disposed opposite to and covering said cavity,an eyebolt, a spring connected at one end with said eyebolt, aheel-piece having an extended part to which the other end of said springis connected, said spring passing through the hollow stem of the frame,and means for limiting the movement of the said tilting head.

In witness whereof I have hereunto set my hand, this 18th day ofNovember, 1903, in the presence of two subscribing witnesses.

HENRY S. GRIFFIN.

Witnesses:

Enos B. VVHrrMoRE, MINNIE SivrrrH.

